September Weather in Leknes, Norway

Last updated: August 27, 2025

In September, Leknes, Norway, experiences a welcoming transition into autumn with temperatures ranging from a comfortable 4°C (39°F) to a pleasant maximum of 20°C (69°F). The average temperature settles around 11°C (52°F), perfect for outdoor activities amid stunning fall colors. However, visitors should be prepared for frequent rainfall, as the month sees approximately 241 mm (9.5 in) of precipitation over 18 days, contributing to the region’s lush landscapes. With an overall humidity level of 84%, the air often feels crisp and invigorating, embodying the essence of the changing season.

September Temperature in Leknes

In September, Leknes, Norway, experiences a gentle transition from the warmth of summer to the crispness of autumn. With temperatures ranging from a mild 4°C (39°F) at night to a pleasant average of 11°C (52°F), the early fall weather invites outdoor exploration. The daytime highs still reach a comfortable 20°C (69°F), hinting at the lingering warmth from summer months. This gradual cooling trend signals a shift in the seasons, making September an ideal time to enjoy the vibrant landscapes as they prepare for winter. As the days shorten and the air becomes fresher, visitors can revel in the beauty of Leknes's changing scenery—a stunning backdrop for any autumn adventure.

September Weather in Leknes: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Leknes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Leknes, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec333034404755595752443834
Data source: Temperature data for Leknes generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Leknes

September in Leknes, Norway, marks a notable transition in precipitation patterns, as it experiences the highest rainfall of the year at 241 mm (9.5 in) over 18 days. This significant increase follows August's 171 mm (6.7 in), illustrating a dramatic shift towards the wetter autumn months. The trend continues as October also presents high precipitation levels, although slightly lower at 211 mm (8.3 in). This month-to-month escalation emphasizes the region's shift from the relatively drier summer, with May and July averaging around 79 mm (3.1 in) and 103 mm (4.1 in), respectively. As September signals the onset of the rainy season, it reinforces Leknes's reputation for variable weather, shaping the lush landscapes of northern Norway.

September Precipitation Trends in Leknes

The chart displays monthly precipitation patterns in Leknes, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Leknes, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec16611617613779115103171241211155147
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Leknes

In September, Leknes experiences a slight rebound in humidity, with levels reaching 84%. This increase follows the warmer months, where humidity hovered around the low 80s, peaking at 81% in August. The transition into autumn brings a noticeable shift, as the air begins to retain more moisture, setting the stage for the impending chill of October, which sees humidity rise to 87%. This trend reflects a consistent pattern throughout the year, with humidity generally peaking in the colder months of autumn and winter, while summer displays slightly lower levels. As the seasons change, September acts as a bridge, blending the warmth of summer with the crispness of fall.

September Average Humidity in Leknes

This chart illustrates the average monthly humidity levels in Leknes, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Leknes is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%83%80%75%78%79%81%84%87%86%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Leknes

As summer transitions to autumn in Leknes, Norway, the UV Index experiences a notable decline in September, dropping to a moderate level of 3. This signals a shift from the high summer values, where protection from the sun becomes crucial during the peak hours. With a burn time of just 30 minutes, it's essential to remain vigilant even as the sun's intensity wanes compared to the summer months. Notably, this gradual decrease in UV exposure reflects the seasonal changes in daylight and sun angle, encouraging residents and visitors to enjoy the outdoors while still prioritizing skin safety. For more detailed insights, you can check the Leknes UV Index.

Maximum UV Index Levels in Leknes for September

The chart shows the monthly maximum UV Index (UVI) for Leknes in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Leknes typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112346643211
Data source: Leknes September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Leknes

In Leknes, Norway, September offers a delightful transition into autumn with 290 hours of sunshine, providing a warmth that lingers from the vibrant summer months. Following July's peak of 479 hours, the sunlight gradually recedes as twilight whispers its arrival, marking a significant drop in daylight. While the sunshine hours decrease compared to the previous months, September still boasts a generous amount of bright days compared to the dimmer winter months ahead, which see only 90 hours in November and a mere 30 hours in December. This gradual shift in sunshine sets the stage for the enchanting Northern lights, but until then, September's sun invites residents and visitors alike to relish in its final golden rays.

Monthly Sunshine Duration in Leknes: September Highlighted

The September sunshine duration represents the total number of hours Leknes experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec37h139h258h340h444h457h479h389h290h203h90h30h
Data source: Leknes September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Leknes During September

In September, the chances of enjoying sunny weather in Leknes, Norway, drop to a modest 18%, marking it as one of the least sunny months of the year. This decline follows a summer peak, where the likelihood of sun hovered around 34% in July, before descending gradually through August. As autumn sets in, the sun tends to shy away even more, leading into October's even gloomier 13% chance. Overall, while September offers a brief window to capture some rays, it signals the transition towards a cooler, cloudier season, reminding us that sunny days are becoming a rarity in this picturesque corner of Norway.

Percentage of Sunny Days in September in Leknes

The chart illustrates the percentage of sunny days in Leknes throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Leknes experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec34%25%17%32%30%32%34%25%18%14%21%28%
Data source: Leknes September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Leknes in September

As September arrives in Leknes, Norway, the transition from the long, sun-soaked summer days begins, bringing a shift toward shorter daylight hours. After basking in nearly 24 hours of light in June, the days gradually dwindle to 12 hours of daylight by the month's end. This tapering trend is a gentle reminder of nature's rhythm, following a peak in May and August where daylight stretched impressively to 18 and 16 hours, respectively. With each passing month, the length of daylight draws closer to the winter's stark reality, where December only offers a mere 3 hours of sun. This gradual decline emphasizes the allure of September, balancing lingering warmth with the anticipation of autumn's approach.

Average Daylight Hours in Leknes for September

The chart illustrates the variation in daylight duration in Leknes throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec5h 5m8h 23m11h 49m15h 18m18h 54m21h 42m20h 3m16h 27m12h 58m9h 33m6h 6m3h 45m
Data source: Leknes daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Leknes

As September settles into Leknes, Norway, the winds return to a lively average speed of 4.5 m/s (10 mph), reminiscent of the breezier winter months. This marks an interesting transition after the calmer summer days, where wind speeds hovered around 3.1 to 3.7 m/s (7 to 8 mph) from May to August. The slight uptick in September's winds signals the onset of autumn, leading up to the more robust gusts of October and November, both holding steady at 4.6 m/s (10 mph). This trend reflects nature’s rhythm, where the tranquil summer breezes give way to invigorating autumn winds, preparing the landscape for the chillier days ahead.

Average September Wind Speed in Leknes

The chart displays monthly wind speed patterns in Leknes, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.54.75.54.13.13.23.73.34.5 m/s4.64.65.4
Data source: Leknes September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Leknes Compares to Other Months

Weather in Leknes varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Leknes, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January showcase striking contrasts in weather. September typically enjoys mild temperatures, with lows around 4°C (39°F) and highs reaching up to 20°C (69°F), contributing to an average of 11°C (52°F). However, it also brings considerable rainfall, with precipitation averaging 241 mm (9.5 in) over 18 days, and humidity remains high at 84%.

In contrast, January plunges into the depths of winter, presenting a much colder climate. The temperature can dip to a minimum of -10°C (14°F), with maximums around 9°C (49°F) and an average of 0°C (33°F). Though January experiences less precipitation at 166 mm (6.5 in) over 16 days, the humidity is slightly higher at 86%. For a detailed look at January conditions, you can check Leknes weather in January.

September and February present stark contrasts in weather. In September, temperatures range from a minimum of 4°C (39°F) to a mild maximum of 20°C (69°F), with an average of 11°C (52°F). The month is characterized by significant rainfall, accumulating to 241 mm (9.5 in) over 18 days, alongside high humidity levels of 84%. In contrast, February experiences much colder conditions, with temperatures plunging to a minimum of -18°C (0°F) and peaking at a maximum of 9°C (49°F), averaging -1°C (31°F). Precipitation is lower at 116 mm (4.6 in) over 14 days, yet the humidity remains consistent at 84%. For a more detailed look at the weather in February, you can visit Leknes weather in February.

September and March present distinctly different weather experiences. In September, temperatures range from a cool 4°C (39°F) at night to a comfortable 20°C (69°F) during the day, with an average of 11°C (52°F). This month is characterized by relatively high precipitation, totaling 241 mm (9.5 in) over 18 days, and a humidity level of 84%. In contrast, March experiences much colder temperatures, with a minimum of -16°C (3°F) and an average of only 1°C (35°F), peaking at a much milder 13°C (56°F). Although March sees less precipitation overall at 176 mm (6.9 in) across 19 days, the humidity remains similarly high at 83%. For a detailed look at Leknes weather in March, visit Leknes weather in March.

In September, temperatures range from a chilly 4°C (39°F) to a comfortable 20°C (69°F), providing an average of 11°C (52°F). The month typically features high humidity at 84% and significant rainfall, with 241 mm (9.5 in) of precipitation over 18 days. In contrast, April experiences colder conditions, with temperatures spanning from -9°C (15°F) to the same maximum of 20°C (69°F), but averaging only 4°C (40°F). Rainfall is reduced in April, totaling 137 mm (5.4 in) across 17 days, and the humidity is slightly lower at 80%. For more specific insights into April weather conditions, you can check out Leknes weather in April.

September and May exhibit contrasting weather patterns, with September generally experiencing milder temperatures. In September, temperatures range from a chilly minimum of 4°C (39°F) to an average of 11°C (52°F) and a maximum of 20°C (69°F). This month is also notably wet, with 241 mm (9.5 in) of precipitation over 18 days and high humidity at 84%. In contrast, May starts off cooler, with temperatures dipping as low as -2°C (29°F), yet it warms up to a maximum of 22°C (72°F) and has a more moderate average of 8°C (47°F). May is much drier, seeing only 79 mm (3.1 in) of precipitation across 14 days and lower humidity at 75%. For more details, you can check Leknes weather in May.

When comparing the weather in September to that in June, it's evident that June generally offers warmer temperatures and less precipitation. In June, the minimum temperature hovers around 3°C (38°F), with an average of 13°C (55°F) and a maximum reaching 28°C (83°F). In contrast, September sees lower averages, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 20°C (69°F). Precipitation is also noticeably higher in September, totaling 241 mm (9.5 in) over 18 days, compared to June's 115 mm (4.5 in) over 17 days. Additionally, humidity levels are slightly higher in September at 84%, while June maintains a more comfortable 78%. For more detailed insights, check out Leknes weather in June.

In comparing the weather between September and July, we see a notable difference in temperature and precipitation patterns. September experiences cooler conditions, with a minimum temperature of 4°C (39°F) and an average of 11°C (52°F), while July boasts warmer temperatures, ranging from a minimum of 6°C (44°F) to a maximum of 31°C (88°F). Additionally, September is significantly wetter, with 241 mm (9.5 in) of precipitation falling over 18 days, compared to July's 103 mm (4.1 in) over 15 days. Humidity levels also differ slightly, with September at 84% and July at 79%. For a more detailed look at July's weather, check out Leknes weather in July.

In comparing the weather of September to August, it’s clear that September experiences cooler temperatures, with a minimum of 4°C (39°F) and an average of 11°C (52°F), compared to August's minimum of 6°C (42°F) and average of 14°C (57°F). Additionally, September sees a notable drop in maximum temperatures, reaching only 20°C (69°F), while August can soar up to 29°C (84°F). Precipitation also increases in September, with 241 mm (9.5 in) spread over 18 days, contrasting August’s 171 mm (6.7 in) over 17 days. Humidity levels remain fairly high in both months, with September at 84% and August at 81%. For more details, check out this link: Leknes weather in August.

September and October present a notable shift in weather conditions. While September boasts milder temperatures with a minimum of 4°C and an average of 11°C, October experiences a drop, starting with a minimum of -3°C and an average of 7°C. Precipitation levels are slightly lower in October at 211 mm, compared to September's 241 mm, although the month still sees rain on 20 days, one more than September's 18 days. Additionally, humidity remains high in both months, increasing from 84% in September to 87% in October. For a detailed look at weather patterns, check out Leknes weather in October.

September and November showcase a significant shift in weather patterns. In September, temperatures range from a minimum of 4°C (39°F) to a maximum of 20°C (69°F), with an average of 11°C (52°F). The month experiences substantial rainfall, totaling 241 mm (9.5 in) over 18 days, and the humidity hovers around 84%. By contrast, November sees a drop in temperature, characterized by a chilling minimum of -10°C (14°F) and a maximum of 12°C (53°F), averaging only 3°C (38°F). Precipitation decreases to 155 mm (6.1 in) but still occurs over 17 days, with humidity slightly rising to 86%. For more detailed insights, check out Leknes weather in November.

September and December present distinctly different weather conditions. In September, temperatures range from a minimum of 4°C (39°F) to a maximum of 20°C (69°F), with an average of 11°C (52°F). This month also experiences significant rainfall, totaling 241 mm (9.5 in) over 18 days, accompanied by high humidity levels at 84%. In contrast, December is much colder, with temperatures plummeting to a minimum of -11°C (12°F) and an average of just 1°C (34°F), reaching a maximum of 9°C (49°F). Precipitation also decreases, totaling 147 mm (5.8 in) over 17 days, while humidity remains high at 85%. For more detailed information, check out Leknes weather in December.

Compare Leknes's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Leknes

As September unfolds in Leknes, the weather transitions to a mild embrace, offering a unique character distinct from the summer months. The temperatures start to cool down, hovering around a comfortable average, while the lush landscapes prepare for the vibrant colors of autumn. With an increase in precipitation and a notable number of rainy days, this month brings a refreshing humidity that enhances the natural beauty of the surroundings. While summer's warmth lingers, the breezy chill offers a perfect backdrop for outdoor adventures and cozy gatherings, making September a delightful time to experience the serene charm of Leknes. For more detailed insights on the area's climate, check out Leknes Climate.